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Challenges and Opportunities in Creating Scalable Voice Services Bill Thies Microsoft Research India Joint work with Shubhranshu Choudhary, Aditya Vashistha, Preeti Mudliar, Arjun Venkatraman, Samujjal Purkayastha, Latif Alam, Anoop Saha, Ben Colmery, Smita Choudhary, Elisa Tinsley, and Saman Amarasinghe

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Voice Remains Primary Interface for Mobile Subscribers in India Most subscribers lack smart phones Text interfaces hindered by: Low literacy (33% of adults in India are non-literate) Language diversity (font support for tribal language?) Mobile Internet: < 3% of subscribers Smart Phone: < 5%Feature Phone: 50-70% (e.g., music player) Basic Phone: 30-50% Source: McKinsey, IDC India

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Interactive Voice Response in India In 2010: Rs. 4,000 Crore from value-added IVR Expected to grow to Rs. 15,000 Crore by 2020 Examples: Ringtones, music, jokes, astrology Booking movie tickets, travel, mobile commerce Screening for Kaun Banega Crorepati TATAs Behtar Zindagi program: information for farmers with over 10,000 voice prompts

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Journalism in Tribal Chhattisgarh No news medium for tribal languages in India Very few tribal journalists who know these languages Is it not legal to broadcast news over community radio in India! Can a mobile platform enable citizens to share their own news?

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CGNet Swara: A Voice Portal for Citizen Journalism with CGNet, MIT and the International Center for Journalists Anyone can report news, issues, etc. in local language Submissions are reviewed by moderators over the Web Appropriate submissions are published: For playback on audio channel For browsing on Web Some submissions seed stories for posting on CGNet site + list

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Deployment: Since Feb 2010

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Father wanders for due NREGA wages, son dies in hospital... Manish Rai from Ambikapur says some days back I had heard an interview on CGnet Swara with a labourer called Pitbasu who had completed 100 days work in NREGA but had not been paid any wages. Today by chance I met him in the hospital and found that while Pitbasu was making rounds for his due NREGA wages his son died in the hospital. Is there any provision in NREGA to punish officials who has caused this grave incident? NREGA laws should be so strong that no one should wait for their wages as has happened with Pitbasu. For more on the story please contact Manish at 09826538904. http://www.cgnetswara.org/index.php?id=2847

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Categorizing the Reports

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Who is Reporting? >400 contributors Top 10% responsible for 49% of posts Often social activists, but with limited voice Earning 5K-10K / month

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Who is Listening? 9500 unique callers Top 10% responsible for 62% of calls Geographies:

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Research Challenge: Enabling Scale How to moderate content at scale? How to pay for the cost of calls at scale?

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Moderating Content at Scale Run a call center? ala JustDial Challenge: maintaining consistent judgment, quality, accountability across moderators Community moderation ala reddit, slashdot, Digg; Quora, Yahoo Answers Opportunity: phone number is unique identity Challenge: taxing to listen to long voice posts Hybrid model: transcribe to Web, moderate on text? Challenge: anonymity in moderation disputes Role for a voice anonymizer?

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Distributing Content at Scale Distributed server to enable local calls Deliver audio over data Streaming download from Web Or with mobile application Can also offer meta-data, search, that reduces traffic Leverage peer-to-peer distribution

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Peer-to-Peer Video Sharing (Thomas Smyth) Ethnography of Bluetooth video sharing in urban Bangalore Amongst non-computer owners (middle and middle-lower class) Over 25 in-person interviews, 100 phone interviews, 10 weeks Despite steep barriers in usability, cost, legality, fear of viruses, privacy, etc., the drive for entertainment prevails Mobile video sharing network

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Current Directions

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An Open Toolkit for Building Interactive Voice Communities

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Talent Hunt: A Community-Moderated Voice Forum

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Conclusions Huge untapped potential for interactive voice communities in India But current services have very limited scale Overcoming hurdles will require mix of technical, business, social solutions